HONOLULU, O'ahu - Spencer Koopmans pitched 6-1/3 solid innings and catcher Cameron Olson homered but host Hawai'i scored five runs over its final two at-bats for a come-from-behind 6-2 Big West Conference baseball win over UC Davis on Saturday night.

UC Davis fell to 19-33 overall and 5-18 in the Big West while the Rainbow Warriors improved to 14-33 overall and 8-14 in league play after winning their second straight game in the weekend series.

Koopmans scattered seven hits while allowing just three runs before being relieved by Craig Lanza in the seventh inning. He had a strikeout and walked just one while picking up 11 flyouts and five groundouts.

Designated hitter Adam Hurley staked the Rainbow Warriors to a 1-0 lead with his RBI single up the middle with two outs in the second inning but that would be their only scoring until the seventh. Koopmans, who retired the side in order in both the first and sixth innings, kept them scoreless over the next four innings.

The Aggie offense, meanwhile, gave Koopmans a 2-1 lead thanks to right-fielder Spencer Henderson's double to right that scored Tino Lipson who led off the fourth with a single. Henderson was thrown at third on the play.

Olson then delivered UC Davis the lead with his two-out solo home run to right field in the seventh. It was Olson's first homer of the season.

The Rainbow Warriors, however, regained the lead in their half of the seventh, tying the game on shortstop Austin Wobrock's double down the left-field line that plated left-fielder Kalei Hanawahine. Second baseman Stephan Ventimilia then scored Wobrock with a single up the middle after Lanza relieved Koopmans.

Hurley's bases-loaded walk in the eighth scored another run while Wobrock's two-run infield single off reliever Max Cordy brought across the final two runs

Corey MacDonald pitched into the eighth inning for Hawai'i, earning the win after giving up just two runs and seven hits. He struck out five and walked nine. Lawrence Chew picked up his third save.

Seven different Aggies collected hits while first baseman Marc Flores, Hanawahine and Wobrock each had two hits for Hawai'i which had 10 overall.

Evan Wolf (3-3, 4.64 ERA) will get the start on the mound for UC Davis in Sunday's series finale. He'll face fellow right-hander Matt Cooper (2-7, 3.31). First pitch is 4:05 p.m. (PDT).